Extend PBE code to support non default PKCS#5 v2.0 PRFs.

1 files changed, 101 insertions, 37 deletions

diff --git a/crypto/evp/evp_pbe.c b/crypto/evp/evp_pbe.c
index c26d2de0f3..c634e1b643 100644
--- a/crypto/evp/evp_pbe.c
+++ b/crypto/evp/evp_pbe.c
@@ -3,7 +3,7 @@
  * project 1999.
  */
 /* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2006 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -67,71 +67,135 @@ static STACK *pbe_algs;
 
 /* Setup a cipher context from a PBE algorithm */
 
-typedef struct {
-int pbe_nid;
-const EVP_CIPHER *cipher;
-const EVP_MD *md;
-EVP_PBE_KEYGEN *keygen;
-} EVP_PBE_CTL;
+typedef struct
+	{
+	int pbe_type;
+	int pbe_nid;
+	int cipher_nid;
+	int md_nid;
+	EVP_PBE_KEYGEN *keygen;
+	} EVP_PBE_CTL;
 
 int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
 	     ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de)
-{
+	{
+	const EVP_CIPHER *cipher;
+	const EVP_MD *md;
+	int cipher_nid, md_nid;
+	EVP_PBE_KEYGEN *keygen;
 
-	EVP_PBE_CTL *pbetmp, pbelu;
-	int i;
-	pbelu.pbe_nid = OBJ_obj2nid(pbe_obj);
-	if (pbelu.pbe_nid != NID_undef) i = sk_find(pbe_algs, (char *)&pbelu);
-	else i = -1;
-
-	if (i == -1) {
+	if (!EVP_PBE_find(EVP_PBE_TYPE_OUTER, OBJ_obj2nid(pbe_obj),
+					&cipher_nid, &md_nid, &keygen))
+		{
 		char obj_tmp[80];
 		EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_UNKNOWN_PBE_ALGORITHM);
 		if (!pbe_obj) BUF_strlcpy (obj_tmp, "NULL", sizeof obj_tmp);
 		else i2t_ASN1_OBJECT(obj_tmp, sizeof obj_tmp, pbe_obj);
 		ERR_add_error_data(2, "TYPE=", obj_tmp);
 		return 0;
-	}
-	if(!pass) passlen = 0;
-	else if (passlen == -1) passlen = strlen(pass);
-	pbetmp = (EVP_PBE_CTL *)sk_value (pbe_algs, i);
-	i = (*pbetmp->keygen)(ctx, pass, passlen, param, pbetmp->cipher,
-						 pbetmp->md, en_de);
-	if (!i) {
+		}
+
+	if(!pass)
+		passlen = 0;
+	else if (passlen == -1)
+		passlen = strlen(pass);
+
+	if (cipher_nid == -1)
+		cipher = NULL;
+	else
+		cipher = EVP_get_cipherbynid(cipher_nid);
+
+	if (md_nid == -1)
+		md = NULL;
+	else
+		md = EVP_get_digestbynid(md_nid);
+
+	if (!keygen(ctx, pass, passlen, param, cipher, md, en_de))
+		{
 		EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_KEYGEN_FAILURE);
 		return 0;
-	}
+		}
 	return 1;	
 }
 
 static int pbe_cmp(const char * const *a, const char * const *b)
-{
+	{
 	const EVP_PBE_CTL * const *pbe1 = (const EVP_PBE_CTL * const *) a,
 			* const *pbe2 = (const EVP_PBE_CTL * const *)b;
-	return ((*pbe1)->pbe_nid - (*pbe2)->pbe_nid);
-}
+	int ret = (*pbe1)->pbe_type - (*pbe2)->pbe_type;
+	if (ret)
+		return ret;
+	else
+		return (*pbe1)->pbe_nid - (*pbe2)->pbe_nid;
+	}
 
 /* Add a PBE algorithm */
 
-int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
+int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid, int md_nid,
 	     EVP_PBE_KEYGEN *keygen)
-{
+	{
 	EVP_PBE_CTL *pbe_tmp;
-	if (!pbe_algs) pbe_algs = sk_new(pbe_cmp);
-	if (!(pbe_tmp = (EVP_PBE_CTL*) OPENSSL_malloc (sizeof(EVP_PBE_CTL)))) {
+	if (!pbe_algs)
+		pbe_algs = sk_new(pbe_cmp);
+	if (!(pbe_tmp = (EVP_PBE_CTL*) OPENSSL_malloc (sizeof(EVP_PBE_CTL))))
+		{
 		EVPerr(EVP_F_EVP_PBE_ALG_ADD,ERR_R_MALLOC_FAILURE);
 		return 0;
-	}
-	pbe_tmp->pbe_nid = nid;
-	pbe_tmp->cipher = cipher;
-	pbe_tmp->md = md;
+		}
+	pbe_tmp->pbe_type = pbe_type;
+	pbe_tmp->pbe_nid = pbe_nid;
+	pbe_tmp->cipher_nid = cipher_nid;
+	pbe_tmp->md_nid = md_nid;
 	pbe_tmp->keygen = keygen;
+
+
 	sk_push (pbe_algs, (char *)pbe_tmp);
 	return 1;
-}
+	}
+
+int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
+	     EVP_PBE_KEYGEN *keygen)
+	{
+	int cipher_nid, md_nid;
+	if (cipher)
+		cipher_nid = EVP_CIPHER_type(cipher);
+	else
+		cipher_nid = -1;
+	if (md)
+		md_nid = EVP_MD_type(md);
+	else
+		md_nid = -1;
+
+	return EVP_PBE_alg_add_type(EVP_PBE_TYPE_OUTER, nid,
+					cipher_nid, md_nid, keygen);
+	}
+
+int EVP_PBE_find(int type, int pbe_nid,
+			int *pcnid, int *pmnid, EVP_PBE_KEYGEN **pkeygen)
+	{
+	EVP_PBE_CTL *pbetmp, pbelu;
+	int i;
+	if (pbe_nid == NID_undef)
+		return 0;
+	pbelu.pbe_type = type;
+	pbelu.pbe_nid = pbe_nid;
+	i = sk_find(pbe_algs, (char *)&pbelu);
+	if (i == -1)
+		return 0;
+	pbetmp = (EVP_PBE_CTL *)sk_value (pbe_algs, i);
+	if (pcnid)
+		*pcnid = pbetmp->cipher_nid;
+	if (pmnid)
+		*pmnid = pbetmp->md_nid;
+	if (pkeygen)
+		*pkeygen = pbetmp->keygen;
+	return 1;
+	}
+		
+
 
 void EVP_PBE_cleanup(void)
-{
+	{
 	sk_pop_free(pbe_algs, OPENSSL_freeFunc);
 	pbe_algs = NULL;
-}
+	}